Yes, point is there's a limit to the amount of chakra you can mould at once. PS seems to remove that limit. Same applies with BM, Naruto could never generate Rasengans as large as he did next to Minato's avatar, his mini-TBB could never reach the size of a avatar TBB. The same is applied to all jutsus in PS.
-Genjutsu that is intended to work on a single person wouldn't have any change as the amount of genjutsu required won't change. Enton has already been created in large amounts forming massive Enton orbs that he'd never be capable of forming on his hand or close to it. Amateratsu? Well the ninjutsu would be released from his eyes, it hasn't been shown to have the ability to work through chakra linked with him as has the Rinnegan and Enton. Rinnegan has already been used in conjunction with PS when he was capable of using his PS as a medium for the outter path absorption of all the Bijuus. So one can insinuate it is in fact capable of using the other paths.
-And the Rinnegan does actually have an effect on the Perfect Susano [
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]. His Rinnegan was capable of blocking the light through his PS. I already gave you the example of outer path using PS as a medium for absorption. I see no reason as to why Deva Path cannot be used through his PS. And anyways, Deva path uses the perfect manipulation of all 5 chakra elements according to the databook. Furthermore, you can see here [
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] that Madara's Susano used hand seals to pull down the meteor from the sky. It clearly works with gravitation as there'd be no other way to bring down a meteor in the sky. Just goes to show the amplification of a Rinnegan jutsu even if it wasn't Tendo, as the Susano itself was making the hand seals. And Sasuke used a PS head before he was about to use his Dimensional teleportation, so it means he's enhancing his Rinnegan tech with Susano in order to take everyone with him.
-Fair enough.